Research And Implementation Of Three-dimensional Visualization Steering System Of Horizontal Well Base On Seismic Data

With the development of oil drilling technology, some reservoirs which can not be commercial development because of oil mining properties are poor or thin, which now can be drilled through the way of horizontal well.Horizontal well technology has been in more and more used, in order to improve the oil production, efficiency of drilling, and exploite the reservoir which can not be effectively developed in past.How to steer horizontal wells is the key technology. In order to provide a convenient and practical compute steering software system to geological engineers and drilling Well engineers, this paper presents and implements a real-time steering system of horizontal well base on seismic data——Three-dimensional Visualization Steering System of Horizontal Well,which run on Windows OS. In order to achieve real-time drilling simulation in seismic data volume , we use data by combining seismic data with the LWD / MWD data and comprehensive logging data, and this software system acquires,processes,transmits data synchronously. This mode of steering provides not only the information of the condition of current drilling floor by using the LWD / MWD data, but also gives the trend of drilling to the engineers by applying the geophysical information which contain in seismic data innovatively.The system is coded in Visual C# 2005 development environment and SQL Server 2000 back-end database.The system includes six parts ,they are :the interception and sent of WITS data, interception of comprehensive logging data, the well site guidance system, well site data remote send part , the data receiving server in base, the base guidance system.This paper studies and solves key technical: the compilation methods of SEG_Y file, seismic database design, send and receive data base on GPRS wireless networks and the drawing of seismic section based on C#, every aspect of these problem has been studied detaily and gived the solutions. This article also tell how this system service in the process of a horizontal drilling to show the actual work process of this system and it's valuable in production.This paper develop a method to use horizontal well drilling data and seismic data combined ,and bring about a real-time steering system of horizontal well base on seismic, which can steering accurately, quickly ,efficiently and in real-time. The meaning of method steering is great both in theory and practice.